130636-60-1

tert-butyl 4-(4-nitrophenethyl)piperazine-1-carboxylate tert-Butyl 4-[2-(4-nitrophenyl)ethyl]piperazine-1-carboxylate 4-(4-nitrophenethyl)piperazine-1-carboxylic acid tert butyl ester 1-Piperazinecarboxylic acid, 4-[2-(4-nitrophenyl)ethyl]-, 1,1-dimethylethyl ester